CN203324407U - Testing device for meter reading port of intelligent electric meter - Google Patents

Abstract

The utility model discloses a test device for a meter reading port of an intelligent electric meter, which comprises a handheld meter reading terminal, a USB to RS485 hub, a USB communication line and an RS485 communication line. The USB interface of the hub is connected, and the RS485 port of the USB to RS485 hub is connected to the meter reading port of the smart electric meter through the RS485 communication line. The utility model uses the USB to RS485 communication mode to connect the handheld meter reading machine with the smart meter reading port for testing, and judges whether the smart meter reading port is normal by judging whether the handheld meter reading machine has collected the current power data of the smart meter, effectively reducing the It reduces the on-site workload caused by misjudgment, realizes the rapid detection of whether the 485 meter reading port is normal, and breaks through the problem that the meter reading port of the meter cannot be quickly and effectively tested on site.

Description

Test device for smart meter reading port

technical field

The utility model relates to the technical field of power distribution equipment maintenance, in particular to a test device for a meter reading port of an intelligent electric meter. the

Background technique

Driven by the awareness of green energy conservation, the smart grid with smart meters as the core has become a key area of development in countries all over the world. The development of smart grids can also benefit utilities and consumers. For example, the smart grid can help power organizations reduce operating expenses, reduce power theft, optimize operations, and respond to user needs in real time. the

With the large-scale installation and use of smart meters, the power systems in various places are building remote centralized reading systems. Now, remote automatic meter reading is mainly realized through GPRS terminals, concentrators, and 230M terminals. However, during the operation of the remote centralized reading system, failure of the smart meter reading port often leads to meter reading failure. Or replace the meter reading terminal to check one by one, which is time-consuming and laborious, and increases the workload of the operation and maintenance personnel. the

For the detection of the meter reading port of the smart meter, the traditional detection mode is to use a large professional instrument to test the meter reading port of the smart meter in the calibration room. However, this traditional detection method cannot meet the detection requirements of the meter reading port of the smart meter on site. Require. the

Utility model content

Aiming at the above disadvantages, the utility model provides a portable test device capable of quickly detecting the meter reading port of the smart electric meter on site. the

The technical scheme adopted by the utility model to solve the technical problems is: a test device for the meter reading port of an intelligent electric meter, which is characterized in that it includes a handheld meter reading terminal, a USB to RS485 hub, a USB communication line and an RS485 communication line. The meter reading terminal is connected to the USB interface of the USB to RS485 hub through the USB communication line, and the RS485 port of the USB to RS485 hub is connected to the meter reading port of the smart meter through the RS485 communication line. the

Preferably, the handheld meter reading terminal includes a housing, a central processing unit arranged in the housing, a USB read-write control chip, and a display screen, an input keyboard and a USB socket arranged on the housing, and the central processing unit is respectively It is connected with the USB read-write control chip, the display screen and the input keyboard, and the USB socket is connected with the USB read-write control chip. the

Preferably, the handheld meter reading terminal includes a TP900 meter reading device produced by Beijing Zhenzhong Electronic Technology Co., Ltd. the

Preferably, the smart meter includes a smart meter conforming to the DL/T645-2007 standard. the

The beneficial effects of the utility model are: the device provided by the utility model is used to test the meter reading port of the smart meter, which effectively reduces the on-site workload caused by misjudgment, such as replacing the meter, replacing the meter reading terminal, etc., to a large extent It improves the labor efficiency of workers, and can be widely used in substations, customer-side sites, and laboratories and other workplaces. The utility model adopts the meter reading method conforming to the smart meter standard of the State Grid (DLT645-2007) and the USB to RS485 test method, and finally realizes the rapid detection of whether the 485 meter reading port is normal, breaking through the previous inability to be fast and effective on the spot Difficulty testing meter reading ports. the

Description of drawings

Fig. 1 is a block diagram of the utility model;

Fig. 2 is a functional block diagram of the handheld meter reading terminal shown in the present invention. the

Detailed ways

In order to clearly illustrate the technical features of this solution, the utility model will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings. the

Example 1

As shown in Figure 1, a kind of test device of the meter reading port of the smart electric meter of the present invention is characterized in that it comprises a handheld meter reading terminal, a USB to RS485 hub, a USB communication line and an RS485 communication line, and the handheld meter reading terminal Connect to the USB interface of the USB-to-RS485 hub through the USB communication line, and connect the RS485 port of the USB-to-RS485 hub to the meter reading port of the smart meter through the RS485 communication line. Wherein, the handheld meter reading terminal adopts the TP900 meter reading device produced by Beijing Zhenzhong Electronic Technology Co., Ltd.; the smart meter adopts a smart meter conforming to the DL/T645-2007 standard. the

Example 2

As shown in Figure 2, different from Embodiment 1, the handheld meter reading terminal includes a housing, a central processing unit arranged in the housing, a USB read-write control chip, and a display screen arranged on the housing, The input keyboard and the USB socket, the central processing unit is respectively connected with the USB read-write control chip, the display screen and the input keyboard, and the USB socket is connected with the USB read-write control chip. the

The above is only a preferred embodiment of the utility model, and for those of ordinary skill in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications are also regarded as It is the protection scope of the utility model. the

Claims (4)

1. a test device of smart meter reading mouth, it is characterized in that, comprises hand-held meter reading terminal, USB turns RS485 concentrator, USB communication line and RS485 communication line, and described hand-held meter reading terminal turns RS485 by USB communication line and USB The USB interface of the hub is connected, and the RS485 port of the USB to RS485 hub is connected to the meter reading port of the smart electric meter through the RS485 communication line. 2. the test device of smart meter reading mouth according to claim 1, it is characterized in that, described hand-held meter reading terminal comprises shell, is arranged on central processing unit in shell, USB read-write control chip, and is arranged on The display screen, the input keyboard and the USB socket on the casing, the central processing unit is respectively connected with the USB read-write control chip, the display screen and the input keyboard, and the USB socket is connected with the USB read-write control chip. 3. The test device for the meter reading port of the smart electric meter according to claim 1, wherein the handheld meter reading terminal comprises a TP900 meter reading device produced by Beijing Zhenzhong Electronic Technology Co., Ltd. 4 . The test device for the meter reading port of the smart meter according to claim 1 , wherein the smart meter comprises a smart meter conforming to the DL/T645-2007 standard.

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